Definition of declivity in English:

declivity

noun

formal
  • A downward slope.

    ‘a thickly wooded declivity’
    • ‘The Brahmaputra River, one of the great rivers of the world, pours down from Tibet, in a steep declivity, into Assam, down toward Bangladesh and the Bay of Bengal.’
    • ‘Set in the Catskill Mountains, the canvas's foreground depicts a logged-over declivity through which runs a thin trickle of water that carries the viewer's eye toward a farmhouse barely visible in the shadows.’
    • ‘Their private apartment rising to a two-storey townhouse overlooking the golf course and encompassing vistas that include the Nephin mountains and a gradual declivity of agricultural land that snuggles in the Moy estuary.’
    • ‘Hours later, I found the pass at over 18,000 feet, a sharp declivity between two minor summits.’
    • ‘A hundred metres to the north is an ancient cairn/wind shelter sitting on the edge of the declivity which leads to Scope End.’
    • ‘When he walked, he walked as though he went down a declivity.’
    gradient, incline, angle, slant, inclination, pitch, decline, ascent, acclivity, rise, fall, downward, upward, downslope, upslope, ramp, rake, tilt, tip, dip, camber, cant, bevel
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Origin

Early 17th century: from Latin declivitas, from declivis ‘sloping down’, from de- ‘down’ + clivus ‘a slope’.

Pronunciation

declivity

/dəˈklivədē//dəˈklɪvədi/